Đề thi Học Sinh giỏi Vật Lý lớp 9 các trường (68)

( thi cú 01 trang)
K THI TUYN SINH VO LP 10 THPT
NM HC 2010-2011
VT Lí CHUYấN
!"#$%&$150 phỳt
Bi 1. (4 im)
'!( )*+%,-./-0")1!2/3$4536/-0"7
8)./-0")1!2/49:";/<!)( !)2/)3=3>?@A!)B
CDA%EF49:";/<!)( !@0#G)3=3>?@A!)BHDA%E7
8)1!2/I!( J-#>KL@;/"-36/-0"M&N;/" !";/"-)2/O74P!
:" !").!2/36/-0"!( )Q)3=3>?@A!)BRCA%EF4P!:"
!"@0#G)3=3>?@A!)BSDA%E7T3>?@4/!&U@V"!( )Q4P!
@W;/,4U@/-X)'!7
Bi 2. (4 im)
'3>4Y5Z)'[RR
D
)(\@W3$P%'&U(=@#$%@PZ)'(=@4P!
&U]!.SD
D
)1RR
D
7Z)'@V"#(\!(=@49#$&"P9/1/@^!W3=3>
49%'3>!?!(1(!5Z)'[[R
D
7_N;/"`a4"P)BZ!b"(=@3=
&U3$3=%4( !!P$7
Bi 3. (4 im)
P%G@)Z!c%")Z45d

[
efgh
i
7/-4U")2/%G@%'Z/)Z1A!)B
jk[i71/")Z45%Y@?1K"/U%G@9/l%'@!`/J)Z#$[im71/
@W")Z45%Y@`P!`P!"/U%G@9/l%'@!`/J)Z#$HCm7_N;/")Z
45@,@no-?3$`aKl/'@@V")Z453$PZ)'7<-T!,4p@,@)Z45d
[
3$d
i
7
Bi 4. (4 im)
qrsgtuvrgwxyzgzr{gr|zrge}~gxzggvgwxyzggP$
K2d

ggh~gzgwgvszgvrugqgguxgzgwxtg~
rxgvrgvrzgvszgvrugqgwzgeggzfsgwggvrgv
ezgggrzgrgwxgrxgzgrxygwxyzgrg
_
#9
Ăgwx~gÂxyzggvgezggh

gegvÊzgÔƠz~gƯgĐgwxyz
gvăvgâgzxgefgêgĂrôgrơvgvgwxyzggefsgzrxygwơ~
Bi 5. (4 im)
q g rx g r gzrgw{-v g wđ g wz g ôv
vrzr~gr gzrgrơxgôg
[
gvgxgvêgvtà
r gzrgĂrâzg|g

i
gvgxgvêgvt~gảx
r gzrgw{-vgwđgvăvrgzrgtơgrsz

[

i
k lg gãávt~gạggw{-vgwđgsz
rszgxằg
[

i
g zr{gr|zrge}~gxgzr
vggĐgrxgr gzrg
[
I
i
gvgeggÊzgzr~gzrgrszgvăvrgẳgeạggwzgr
zrg
[
gefgêzggzrgvggĐgrxgr gzrgzgvÊzgtơgr|zrge}~
ẵẵẵẵẵẵẵẵẵẵHTẵẵẵẵẵẵẵẵẵẵ
ắ3$9T`?&,Pn"77
bA!,%p[ bA!,%pi


d j


B

d

[

_

i